Optimize flow and code.
1. include\printmsg.h:
   1) Align print_ip_header statement to printmsg.c
2. lib\display_lib\printmsg.c:
   1) Add code which are printing count, time, total lenght to print_ip_header.
3. lib\netop_lib\netop.c:
   1) Use str_to_upper for printing protocol->p_name.
4. src\bcsniffer.c
   1) Optimize code.
   2) Remove unnecessary print_tcp_in_detail and print_udp_in_detail functions.
   3) Refactor some variables in main().